As the CIA has long realised the shortcomings of the polygraph, the past 5 years has seen a race to develop new machines and technologies to detect lies. And few can claim to be as revolutionary as Brain Fingerprinting, the non-invasive technique developed by Dr Larry Farwell. Brain Fingerprinting claims to do away with lying altogether, instead looking for recognition responses inside the brain. Were you at the crime scene? Did you commit the crime? "If you were there, that information is stored in your brain, and we can detect that knowledge" says Farwell.

Is it the beginning of a new era? With the help of university student Eva, we put Farwell's technology to the test to find out...One thing's for sure, getting away with lying is fast becoming more difficult.

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